1221042024151 has 2 divisors, whose sum is σ = 1221042024152. Its totient is φ = 1221042024150.

The previous prime is 1221042024127. The next prime is 1221042024161. The reversal of 1221042024151 is 1514202401221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221042024151 - 2⁷ = 1221042024023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221042024161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610521012075 + 610521012076.

It is an arithmetic number, because the mean of its divisors is an integer number (610521012076).

Almost surely, 2^{1221042024151} is an apocalyptic number.

1221042024151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221042024151 is an equidigital number, since it uses as much as digits as its factorization.

1221042024151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 1221042024151 its reverse (1514202401221), we get a palindrome (2735244425372).

The spelling of 1221042024151 in words is "one trillion, two hundred twenty-one billion, forty-two million, twenty-four thousand, one hundred fifty-one".